#427497
Closest named color: Dull Blue (#49759C). oklch(53.9% 0.077 240.8), rgb(66, 116, 151).
Aa
White text reads best on this color (5.02:1).
About this color
#427497 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.077 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Dull Blue (#49759C), ΔE 0.012 away. White text reads best on it, at 5.02:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.077) |
| Temperature | cool |
| Nearest name | Dull Blue (#49759C) |
| Black text | 4.17:1 |
| White text | 5.02:1 |
Values
| HEX | #427497 |
| RGB | rgb(66, 116, 151) |
| HSL | hsl(205, 39%, 43%) |
| OKLCH | oklch(53.9% 0.077 240.8) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #427497 | 5.02:1 | AA | Lc -80.0 | Fine for body text |
| Black text on #427497 | 4.17:1 | AA large text | Lc 29.5 | Dividers and decoration only |
| #427497 text on white | 5.02:1 | AA | Lc 74.6 | Content text, not long reading |
| #427497 text on black | 4.17:1 | AA large text | Lc -27.1 | Dividers and decoration only |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 600.
-
Step 50
50
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBF0
oklch(93.6% 0.01 238.5)
-
Step 200
200
#CEDBE5
oklch(88.5% 0.02 240.8)
-
Step 300
300
#ADC4D5
oklch(80.8% 0.035 240)
-
Step 400
400
#82A6C0
oklch(70.8% 0.055 239.9)
-
Step 500
500
#618FB1
oklch(63% 0.072 241.3)
-
Step 600
600 (this color)
#427497
oklch(53.9% 0.077 240.8)
-
Step 700
700
#386686
oklch(49.1% 0.072 240.7)
-
Step 800
800
#2F536D
oklch(42.7% 0.06 241.5)
-
Step 900
900
#2A4558
oklch(37.7% 0.046 240.3)
-
Step 950
950
#192834
oklch(26.9% 0.03 243.3)
#427497 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #647499 | 0.041 |
| Deuteranopia (no green cones) | #596B96 | 0.035 |
| Tritanopia (no blue cones) | #007D80 | 0.063 |
| Achromatopsia (no color) | #6F6F6F | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #427497
#427497
oklch(53.9% 0.077 240.8)
- #8F633E
#8F633E
oklch(53.8% 0.077 60.1)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #427497, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Blue #49759C ΔE 0.012
- Metallic Blue #4F738E ΔE 0.018
- Muted Blue #3B719F ΔE 0.019
- Cerulean #457B9D ΔE 0.021
- Stormy Blue #507B9C ΔE 0.027
- Flat Blue #3C73A8 ΔE 0.028
- Sea Blue #047495 ΔE 0.036
- Ocean Blue #03719C ΔE 0.039
Use #427497 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.